CN116159285A

CN116159285A - Sports teaching instrument with simple structure and convenient operation

Info

Publication number: CN116159285A
Application number: CN202310445814.5A
Authority: CN
Inventors: 李刚
Original assignee: Changchun Vocational Institute of Technology
Current assignee: Changchun Vocational Institute of Technology
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2023-05-26
Anticipated expiration: 2043-04-24
Also published as: CN116159285B

Abstract

The invention discloses a sports teaching instrument with a simple structure and convenient operation, which relates to the technical field of sports instruments and comprises a bottom plate, wherein the upper part of the bottom plate is fixedly connected with a vertical plate, the upper end of the vertical plate is fixedly connected with a scale line beam frame, the outer surface of the scale line beam frame is in sliding connection with a measurement push plate.

Description

Sports teaching instrument with simple structure and convenient operation

Technical Field

The invention relates to the technical field of sports apparatuses, in particular to a sports teaching instrument with a simple structure and convenient operation.

Background

Sports is a variety of activities which are developed gradually in the development process of human beings and are used for consciously cultivating physical quality of the human beings, wherein the seat body forward bending is a physical health test item of middle and primary schools, the test purpose of the sports is to measure the possible activity amplitude of joints such as trunk, waist and hip in a static state, and the development level of the joint, ligament and muscle expansion and elasticity and physical flexibility quality of the joints are mainly reflected, so that a teacher usually demonstrates action teaching students before using the seat body forward bending sports apparatus;

after the conventional seat body forward-bending exercise machine is demonstrated by a teacher, the measuring plate is pushed to the limit position, so that the teacher cannot retract the measuring plate at the original position, the teacher also needs to stand up from the original position, and then manually toggle the measuring plate to return to the original position, which is unfavorable for the continuous demonstration of the seat body forward-bending exercise of the teacher, the course progress can be influenced, and the teacher can not achieve the standard seat body forward-bending exercise due to poor toughness or incapability of automatically observing the exercise when simulating the seat body forward-bending exercise, thereby reducing the teaching quality.

In view of the above, the invention provides a sports teaching instrument which is simple in structure and convenient to operate.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the invention provides the sports teaching instrument which has a simple structure and is convenient to operate, and solves the problems in the background art.

(II) technical scheme

In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a sports teaching instrument of simple structure simple operation, includes the bottom plate, the upper portion fixedly connected with riser of bottom plate, the upper end fixedly connected with scale mark crossbeam frame of riser, the surface sliding connection of scale mark crossbeam frame has the measurement push pedal, install knee conflict spacing subassembly on the bottom plate, install measurement board reset assembly on the riser;

the knee is contradicted spacing subassembly and is included movable tank, L type pole, spring flexible stock, clamp plate, connecting rod, sliding tray, slider, spring flexible quarter butt, swash plate, major axis, arc clamp sleeve, runner, the movable tank has all been seted up to the lateral wall about the bottom plate, sliding connection has L type pole in the movable tank, the one side fixedly connected with spring flexible stock of L type pole, the equal fixedly connected with clamp plate of upper end of spring flexible stock, the connecting rod has all been rotated to the terminal surface under the clamp plate, the sliding tray has been seted up to the one side of L type pole, sliding connection has the slider in the sliding tray, the one end that the clamp plate was kept away from to the connecting rod is rotated with the slider lateral wall and is connected, the up end fixedly connected with spring flexible quarter butt of slider, the upper end of L type pole runs through and rotates and be connected with the major axis, the surface fixedly connected with arc clamp sleeve of major axis runs through the one side fixedly connected with runner of L type pole, the runner is laminated with the inclined plane of swash plate, the mounting panel on running through and is equipped with the jack on the plug bush.

Preferably, the measuring plate reset assembly comprises a convex plate and a shaft sleeve, wherein the convex plate is fixedly connected with the left side wall and the right side wall of the vertical plate, the shaft sleeve is rotationally connected with one side of the convex plate, which is close to the long shaft, one end of the supporting spring is fixedly connected with the mounting plate on the sloping plate, and the other end of the supporting spring is fixedly connected with the outer surface of the inserting column.

Preferably, the measuring plate reset assembly further comprises a pull rope, the long shaft is slidably connected in the shaft sleeve, and the pull rope is wound on the outer wall of the shaft sleeve.

Preferably, the measuring board reset assembly further comprises a vertical groove and a sliding plate, wherein the vertical groove is formed in one surface of the vertical plate, the sliding plate is connected in the vertical groove in a sliding mode, one end of the pull rope is fixedly connected with the outer surface of the shaft sleeve, and the other end of the pull rope penetrates through the vertical plate and is fixedly connected with the sliding plate.

Preferably, the measuring plate reset assembly further comprises a spring limiting telescopic rod and a prop, the spring limiting telescopic rod is fixedly connected in the vertical groove, the upper end of the spring limiting telescopic rod is fixedly connected with the sliding plate, and the prop is fixedly connected on the sliding plate.

Preferably, the measuring plate reset assembly further comprises a piezoelectric ceramic block and a conductive wire, wherein the piezoelectric ceramic block is fixedly connected to one surface of the scale line beam frame, which is close to the supporting column, and the conductive wire is electrically connected to the outer surface of the piezoelectric ceramic block.

Preferably, the measuring plate reset assembly further comprises an electromagnetic plate, a magnetic block and a rubber sleeve, wherein the electromagnetic plate is fixedly connected with the inner cavity wall of the scale mark beam frame, the conducting wire is electrically connected with the electromagnetic plate, the measuring push plate penetrates through one end of the inner cavity wall of the scale mark beam frame and is fixedly connected with the magnetic block, the electromagnetic plate and the magnetic block are magnetic poles opposite to each other, and the rubber sleeve is fixedly connected with the front end of the scale mark beam frame.

Preferably, the measuring plate reset assembly further comprises a rotating rod and a U-shaped protruding block, wherein the U-shaped protruding block is symmetrically and fixedly connected to one side of the vertical plate, which is far away from the measuring push plate, and the rotating rod is rotationally connected in the U-shaped protruding block.

Preferably, the measuring plate reset assembly further comprises an elastic jacket and a universal pulley, wherein the elastic jacket is fixedly connected to one surface of the vertical plate, which is close to the rotating rod, and the universal pulley is arranged at the upper end of the rotating rod.

(III) beneficial effects

The sports teaching instrument with simple structure and convenient operation provided by the invention has the following beneficial effects:

when the arc-shaped jacket rotates towards the direction of the pressing plate, the knee part of a user can be limited, so that the arc-shaped jacket can assist in flattening the straightened knee, the situation that the knee is bent due to poor toughness when a teacher simulates the forward bending action of the teaching seat body can be avoided, the teaching action of the teacher is more standard, and the teaching quality is improved;

because the L-shaped rod and the movable groove are in a close fit state, the situation that the L-shaped rod is displaced when the L-shaped rod does not manually slide can be avoided, the position of the whole knee abutting limiting assembly can be adjusted according to the heights of practical teachers and students, rubber pads are arranged on the inner walls of the two arc-shaped jackets, comfort level can be improved when the knees of a user are limited, and the situation that the knees of the user are injured due to hard limiting is avoided;

after the teaching instrument is used, the rotating rod can be held by a hand to take out the teaching instrument from the elastic jacket, so that the universal pulley is attached to the ground, and then the sports teaching instrument on the whole bottom plate can be dragged to integrally move by using the hollow ring of the bottom plate, so that the burden of the teacher carrying the teaching instrument to a teaching site for use can be reduced, the teacher can conveniently and quickly move the whole teaching instrument, and the whole teaching instrument can be vertically placed when not used, so that the occupied space is saved;

because the voltage of piezoceramics piece can reach 500 milliamps, the magnet circular telegram minimum only needs 0.5A, 500 milliamps promptly, consequently the electric current that piezoceramics piece produced is enough to let electromagnetic plate circular telegram produce magnetism, can adsorb the magnetic block, make the magnetic block drive the measurement push pedal slide and be close to electromagnetic plate at scale mark crossbeam frame, alright let originally far away measure the push pedal reset to initial action, do not need the teacher to stand up again and manually reset the measurement push pedal, be favorable to the teacher to demonstrate a plurality of seat body forward-flexing actions in succession, still can reset the measurement push pedal after accomplishing voluntarily when a plurality of students train seat body forward-flexing, can improve the progress of student's physical training on the classroom.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged schematic view of the area A in FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the area B of FIG. 1 according to the present invention;

FIG. 4 is a schematic view of the mounting structure of the L-shaped rod and the spring telescopic long rod of the invention;

FIG. 5 is an enlarged view of the area C of FIG. 4 according to the present invention;

FIG. 6 is a schematic view of the overall installation structure of the present invention in a bottom view;

FIG. 7 is an enlarged schematic view of the area D of FIG. 6 according to the present invention;

FIG. 8 is an enlarged schematic view of the structure of the area E in FIG. 6 according to the present invention;

FIG. 9 is a schematic view of the rear-view overall mounting structure of the present invention;

fig. 10 is an enlarged view of the area F in fig. 9 according to the present invention.

In the figure: 1. a bottom plate; 2. a vertical plate; 3. a scale mark cross beam frame; 4. measuring a push plate; 51. a moving groove; 52. an L-shaped rod; 53. a spring telescoping long rod; 54. a pressing plate; 55. a connecting rod; 56. a sliding groove; 57. a slide block; 58. a spring telescoping short rod; 59. a sloping plate; 510. a long axis; 511. an arc-shaped jacket; 512. a rotating wheel, 513 and a plunger; 514. a support spring; 515. a jack;

61. a convex plate; 62. a shaft sleeve; 63. a pull rope; 64. a vertical groove; 65. a slide plate; 66. a spring limiting telescopic rod; 67. abutting the column; 68. a piezoelectric ceramic block; 69. a conductive wire; 610. an electromagnetic plate; 611. a magnetic block; 612. a rubber sleeve; 613. a rotating lever; 614. an elastic jacket; 615. a universal pulley; 616. u-shaped protruding blocks.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Embodiment one of the invention

Referring to fig. 1 to 10, a sports teaching instrument with simple structure and convenient operation comprises a bottom plate 1, wherein a vertical plate 2 is fixedly connected to the upper part of the bottom plate 1, a scale line beam frame 3 is fixedly connected to the upper end of the vertical plate 2, a measuring push plate 4 is slidingly connected to the outer surface of the scale line beam frame 3, a knee abutting limiting assembly is arranged on the bottom plate 1, and a measuring plate resetting assembly is arranged on the vertical plate 2;

the left side wall and the right side wall of the bottom plate 1 are respectively provided with a moving groove 51, an L-shaped rod 52 is connected with the moving groove 51 in a sliding way, one surface of the L-shaped rod 52 is fixedly connected with a spring telescopic long rod 53, the upper end of the spring telescopic long rod 53 is fixedly connected with a pressing plate 54, the lower end surface of the pressing plate 54 is respectively connected with a connecting rod 55 in a rotating way, one surface of the L-shaped rod 52 is provided with a sliding groove 56, the sliding groove 56 is connected with a sliding block 57 in a sliding way, one end of the connecting rod 55, far away from the pressing plate 54, is rotationally connected with the side wall of the sliding block 57, the upper end surface of the sliding block 57 is fixedly connected with a spring telescopic short rod 58, the upper end of the spring telescopic short rod 58 is fixedly connected with a sloping plate 59, the upper end of the L-shaped rod 52 is rotationally connected with a long shaft 510 in a penetrating way, the outer surface of the long shaft 510 is fixedly connected with an arc-shaped jacket 511, one surface of the long shaft 510 penetrates through the L-shaped rod 52 is fixedly connected with a rotating wheel 512, the rotating wheel 512 is attached to the inclined surface of the sloping plate 59, a mounting plate on the sloping plate 59 is in a penetrating way with a inserting column 513, the outer wall of the inserting column 513 is sleeved with a supporting spring 514, the inserting hole 515 is formed in the rotating wheel 512, when the sliding plate is transversely moved, and when the connecting rod 55 is in a sliding way, and when moving in a sliding direction, the sliding plate is further, the sliding plate 512 is further, the bending and the bending plate can be caused can be deformed, and the bending and the limit can be caused;

the left and right side walls of the vertical plate 2 are fixedly connected with a convex plate 61, one surface of the convex plate 61, which is close to the long shaft 510, is rotationally connected with a shaft sleeve 62, one end of a supporting spring 514 is fixedly connected with a mounting plate on the sloping plate 59, the other end of the supporting spring 514 is fixedly connected with the outer surface of the inserted column 513, and the long shaft 510 is transversely and slidingly connected in the shaft sleeve 62, so that the shaft sleeve 62 is driven to synchronously rotate when the long shaft 510 rotates;

the long shaft 510 is slidably connected in the shaft sleeve 62, the pull rope 63 is wound on the outer wall of the shaft sleeve 62, the vertical groove 64 is formed in one surface of the vertical plate 2, the sliding plate 65 is slidably connected in the vertical groove 64, one end of the pull rope 63 is fixedly connected with the outer surface of the shaft sleeve 62, the other end of the pull rope 63 penetrates through the vertical plate 2 and is fixedly connected with the sliding plate 65, and when the pull rope 63 is wound, the sliding plate 65 is pulled to slide down due to the fact that the length of the pull rope 63 is shortened;

a spring limiting telescopic rod 66 is fixedly connected in the vertical groove 64, the upper end of the spring limiting telescopic rod 66 is fixedly connected with a sliding plate 65, a supporting column 67 is fixedly connected on the sliding plate 65, and the supporting column 67 is attached to a piezoelectric ceramic block 68 in an initial state;

the piezoelectric ceramic block 68 is fixedly connected to one surface of the scale mark beam frame 3 close to the support column 67, the outer surface of the piezoelectric ceramic block 68 is electrically connected with the conducting wire 69, and when pressure is applied to the piezoelectric ceramic block 68, two ends of the piezoelectric ceramic block 68 generate charges with opposite polarities, so that current is formed;

the inner cavity wall of the scale mark beam frame 3 is fixedly connected with an electromagnetic plate 610, a conductive wire 69 is electrically connected with the electromagnetic plate 610, one end of the measuring push plate 4 penetrating through the inner cavity wall of the scale mark beam frame 3 is fixedly connected with a magnetic block 611, the electromagnetic plate 610 and the magnetic block 611 are mutually opposite magnetic poles, the front end of the scale mark beam frame 3 is fixedly connected with a rubber sleeve 612, the rubber sleeve 612 can protect the front end of the scale mark beam frame 3, and the situation that a teacher or a student touches the tip of the scale mark beam frame 3 due to excessive movement when doing body position forward bending movement is avoided;

the side of the vertical plate 2 far away from the measurement push plate 4 is symmetrically and fixedly connected with a U-shaped protruding block 616, and a rotating rod 613 is rotatably connected in the U-shaped protruding block 616, and as the lower part of the U-shaped protruding block 616 is in a closed U-shaped shape, the rotating rod 613 can be abutted by the U-shaped protruding block 616 after being rotated for ninety degrees vertically, and can not rotate continuously;

the elastic clamping sleeve 614 is fixedly connected to one surface of the vertical plate 2, which is close to the rotating rod 613, the universal pulley 615 is installed at the upper end of the rotating rod 613, the elastic clamping sleeve 614 is sleeved on the outer surface of the rotating rod 613, and the folded rotating rod 613 can be limited and fixed.

The following is the overall operation of the above embodiment:

piezoelectric ceramics are functional ceramic materials capable of converting mechanical energy and electrical energy into each other by applying pressure to a piezoelectric ceramic plate, causing opposite polarity charges to be generated at both ends thereof, and then becoming electric current through a circuit, an effect called piezoelectric effect.

Initial state: the two arc jackets 511 are vertically opened, and the supporting columns 67 are attached to the piezoelectric ceramic blocks 68;

when the teaching machine works, a teacher sits on the bottom plate 1 at the buttocks of the teacher, then props the legs to the vertical plate 2, the legs of the teacher are in a bending state, the positions of the L-shaped rods 52 can be adjusted by holding the two L-shaped rods 52 by hands to transversely slide in the moving grooves 51, so that the teaching machine is suitable for the popliteal fossa positions of the legs of different teachers or students, after the teaching machine is adjusted, the two legs can straighten, the used popliteal fossa can be attached to the pressing plate 54, the pressing plate 54 is pressed downwards due to the gravity of the legs, the spring telescoping long rod 53 is compressed, the pressing plate 54 is pressed downwards to rotate and incline by abutting the connecting rod 55, the lower end of the connecting rod 55 pushes the sliding block 57 to transversely slide in the sliding groove 56, the sliding block 57 drives the spring telescoping short rod 58 and the sloping plate 59 to integrally slide close to the rotating wheel 512, the sloping plate 59 rubs the rotating wheel 512 to rotate, because the long shaft 510, the arc-shaped jacket 511 and the rotating wheel 512 are in a fixed connection relationship, the rotating wheel 512 drives the long shaft 510 and the arc-shaped jacket 511 to rotate at the same time, so that the arc-shaped jacket 511 rotates towards the direction of the pressing plate 54, and along with the continuous friction of the inclined plate 59, the rotating wheel 512 continuously rotates by friction to drive the jack 515 on the outer surface of the rotating wheel to be close to the inclined plate 59, so that the inserting column 513 on the inclined plate 59 can be smoothly inserted into the jack 515, the rotating wheel 512 can be inserted and limited, the arc-shaped jacket 511 towards the direction of the pressing plate 54 can be limited and fixed, the knee part of a user can be clamped and limited, the arc-shaped jacket 511 can assist in flattening the straightened knee, the situation that the knee is bent due to poor toughness when a teacher simulates the forward bending action of a teaching seat body can be avoided, the teaching action of the teacher can be more standard, the teaching quality is improved;

further, the two L-shaped rods 52 can slide transversely in the moving groove 51, and the L-shaped rods 52 and the moving groove 51 are in a close fit state, so that under the condition that the L-shaped rods 52 do not slide manually, friction is generated between the L-shaped rods 52 and the moving groove 51, displacement of the L-shaped rods 52 can be avoided, the position of the whole knee abutting limiting assembly can be adjusted according to the heights of practical teachers and students, rubber pads are arranged on the inner walls of the two arc-shaped jackets 511, comfort level can be improved when the knees of a user are limited, and injury of the knees of the user caused by limiting of hard materials is avoided;

after the teaching instrument is used, the rotating rod 613 can be held by a hand to be taken out from the elastic jacket 614, so that the universal pulley 615 is attached to the ground, and then the sports teaching instrument on the whole bottom plate 1 can be dragged to integrally move by using the hollow ring of the bottom plate 1, so that the burden of a teacher carrying the teaching instrument to a teaching site for use can be reduced, the teacher can conveniently and rapidly move the whole teaching instrument, and the whole teaching instrument can be vertically placed when not used, so that the occupied space is saved;

further, when the long shaft 510 drives the shaft sleeve 62 to rotate, the shaft sleeve 62 winds the pull ropes 63 to shorten the length of the pull ropes 63, so that the pull ropes 63 on the outer surfaces of the two shaft sleeves 62 are shortened, and the sliding plate 65 is pulled to slide downwards along the vertical groove 64, so that the sliding plate 65 presses the spring limiting telescopic rod 66 to shrink, the sliding plate 65 downwards drives the supporting column 67 to be far away from the piezoelectric ceramic block 68, after the teacher finishes the seat body forward bending action, the measuring push plate 4 is positioned at a position far away from the rubber sleeve 612 and the electromagnetic plate 610, when the measuring push plate 4 needs to be reset, a user only needs to hold the inserting column 513 to pull in a direction far away from the rotating wheel 512 and drive the supporting spring 514 to stretch, so that the inserting column 513 is separated from the jack 515 on the rotating wheel 512, at this moment, the two arc-shaped jackets 511 can be held upwards to enable the arc-shaped jackets 511 to rotate and reset with the long shaft 510, at this moment, the knee can be bent to enable the popliteal fossa to not to press the pressing plate 54 any more, the long shaft 510 rotates reversely to loosen the originally wound pull rope 63, the sliding plate 65 is not pulled any more, the spring limiting telescopic rod 66 returns to rebound and slides upwards in the vertical groove 64, the sliding plate 65 pushes the supporting column 67 to upwards prop against the piezoelectric ceramic block 68, at the moment, the piezoelectric ceramic block 68 generates current and transmits the current to the electromagnetic plate 610 through the conducting wire 69, as the voltage of the piezoelectric ceramic block 68 can reach 500 milliamperes, the magnet is electrified by 0.5A at least, namely 500 milliamperes, the current generated by the piezoelectric ceramic block 68 is enough to enable the electromagnetic plate 610 to be electrified to generate magnetism, the magnetic block 611 can absorb the magnetism, the magnetic block 611 drives the measurement push plate 4 to slide on the scale mark beam frame 3 to be close to the electromagnetic plate 610, the originally far measurement push plate 4 can be reset to the initial action without a teacher standing up the manual reset measurement push plate 4 again, the device is beneficial to a teacher to continuously demonstrate forward bending actions of a plurality of seats, and can automatically reset the measurement push plate 4 after completion when a plurality of students train the forward bending actions of the seats, so that the progress of physical training of the students in a class can be improved.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sports teaching instrument of simple structure simple operation, includes bottom plate (1), its characterized in that: the upper part of the bottom plate (1) is fixedly connected with a vertical plate (2), the upper end of the vertical plate (2) is fixedly connected with a scale mark beam frame (3), the outer surface of the scale mark beam frame (3) is slidably connected with a measuring push plate (4), a knee collision limiting assembly is arranged on the bottom plate (1), and a measuring plate resetting assembly is arranged on the vertical plate (2);

the knee-abutting limiting assembly comprises a moving groove (51), an L-shaped rod (52), a spring telescopic long rod (53), a pressing plate (54), a connecting rod (55), a sliding groove (56), a sliding block (57), a spring telescopic short rod (58), a sloping plate (59), a long shaft (510), an arc jacket (511) and a rotating wheel (512), wherein the moving groove (51) is formed in the left side wall and the right side wall of the bottom plate (1), the L-shaped rod (52) is connected in a sliding manner in the moving groove (51), the spring telescopic long rod (53) is fixedly connected to one surface of the L-shaped rod (52), the pressing plate (54) is fixedly connected with the pressing plate (54), the connecting rod (55) is connected to the lower end surface of the pressing plate (54) in a rotating manner, the sliding groove (56) is connected with the sliding block (57) in a sliding manner, one end of the connecting rod (55) away from the pressing plate (54) is connected with the side wall of the sliding block (57) in a rotating manner, the spring telescopic short rod (58) is fixedly connected to the upper end surface of the sliding block (51), the upper end of the sloping plate (58) is connected with the long shaft (52) in a rotating manner, the outer surface fixedly connected with arc of major axis (510) presss from both sides cover (511), one side fixedly connected with runner (512) that major axis (510) run through L type pole (52), the inclined plane of runner (512) and swash plate (59) laminating mutually, mounting panel on swash plate (59) runs through sliding connection has spliced pole (513), the outer wall cover of spliced pole (513) is equipped with supporting spring (514), jack (515) have been seted up on runner (512).

2. The sports teaching instrument with simple structure and convenient operation according to claim 1, wherein: the measuring plate reset assembly comprises a convex plate (61) and a shaft sleeve (62), wherein the convex plate (61) is fixedly connected to the left side wall and the right side wall of the vertical plate (2), the shaft sleeve (62) is rotationally connected to one side, close to a long shaft (510), of the convex plate (61), one end of a supporting spring (514) is fixedly connected with a mounting plate on a sloping plate (59), and the other end of the supporting spring (514) is fixedly connected with the outer surface of an inserting column (513).

3. The sports teaching instrument with simple structure and convenient operation according to claim 2, wherein: the measuring plate reset assembly further comprises a pull rope (63), the long shaft (510) is connected in the shaft sleeve (62) in a sliding mode, and the pull rope (63) is wound on the outer wall of the shaft sleeve (62).

4. A sports teaching instrument according to claim 3 and having a simple structure and being easy to operate, and comprising: the measuring plate reset assembly further comprises a vertical groove (64) and a sliding plate (65), wherein the vertical groove (64) is formed in one surface of the vertical plate (2), the sliding plate (65) is connected in the vertical groove (64) in a sliding mode, one end of the pull rope (63) is fixedly connected with the outer surface of the shaft sleeve (62), and the other end of the pull rope (63) penetrates through the vertical plate (2) and is fixedly connected with the sliding plate (65).

5. The sports teaching instrument with simple structure and convenient operation according to claim 4, wherein: the measuring plate reset assembly further comprises a spring limiting telescopic rod (66) and a supporting column (67), the spring limiting telescopic rod (66) is fixedly connected in the vertical groove (64), the upper end of the spring limiting telescopic rod (66) is fixedly connected with the sliding plate (65), and the supporting column (67) is fixedly connected to the sliding plate (65).

6. The sports teaching instrument with simple structure and convenient operation according to claim 1, wherein: the measuring plate reset assembly further comprises a piezoelectric ceramic block (68) and a conductive wire (69), wherein the piezoelectric ceramic block (68) is fixedly connected to one surface, close to the supporting column (67), of the scale line beam frame (3), and the conductive wire (69) is electrically connected to the outer surface of the piezoelectric ceramic block (68).

7. The sports teaching instrument with simple structure and convenient operation according to claim 6, wherein: the measuring plate reset assembly further comprises an electromagnetic plate (610), a magnetic block (611) and a rubber sleeve (612), the electromagnetic plate (610) is fixedly connected with the inner cavity wall of the scale mark beam frame (3), the conducting wire (69) is electrically connected with the electromagnetic plate (610), the measuring push plate (4) penetrates through one end of the inner cavity wall of the scale mark beam frame (3) and is fixedly connected with the magnetic block (611), the electromagnetic plate (610) and the magnetic block (611) are magnetic poles opposite to each other, and the rubber sleeve (612) is fixedly connected with the front end of the scale mark beam frame (3).

8. The sports teaching instrument with simple structure and convenient operation according to claim 7, wherein: the measuring plate reset assembly further comprises a rotating rod (613) and a U-shaped protruding block (616), wherein the U-shaped protruding block (616) is symmetrically and fixedly connected to one side, far away from the measuring push plate (4), of the vertical plate (2), and the rotating rod (613) is rotatably connected to the U-shaped protruding block (616).

9. The sports teaching instrument with simple structure and convenient operation according to claim 8, wherein: the measuring plate reset assembly further comprises an elastic clamping sleeve (614) and a universal pulley (615), wherein the elastic clamping sleeve (614) is fixedly connected to one surface, close to the rotating rod (613), of the vertical plate (2), and the universal pulley (615) is arranged at the upper end of the rotating rod (613).